1.With EN131,ISO 9001,CE and BV 2.Material:Aluminum 3.multi-purpose ladder ... 4.Safe and easy to operate 1.With the EN131,ISO 9001,CE and BV certificates2.Aluminum multi-purpose ladder en131(small ... HQ665piecesThickness of aluminum1.2mm A:380mm,B:1010mm,C:1020mm,D:1800mm,E:3730mm professional manufacturer aluminum multi-purpose ladder en131 ...